Hi Martin,
> wxHello,
>
> today I built wxHaskell from source and want to share my experience,
> so that the build process can (hopefully) be fixed.
Thanks for trying wxHaskell on Gentoo.
> * The first problem is that the permissions on the package.conf file
> (located at /usr/lib/ghc-6.2.2 in my setup) are set incorrectly.
> I don't know whether that is a GHC or wxHaskell problem, but it
> leads to problems when building an example after installing, because
> the package.conf file is not world-readable.
The configure script of wxHaskell can take a "--package-conf=<file>"
flag where you can point to a local package configuration file. Read
the docs for "ghc-pkg" on how to create this.
> * Second, but unfortunately not reproducible, I sometimes got linking
> errors about not finding symbols from the Parsec library. This is
> possibly related, because maybe the package.conf file is in a broken
> state while GHC searches for the Parsec binaries. Since I recompiled
> wxHaskell a dozen times, with manual chmod and/or removal of the
> package.conf file, I have not been able to reproduce the setup for
> which this problem occurs. Maybe someone else has had a similar
> experience?
Never heard about this -- maybe it is related to the package conf file.
> * It is not as easy as implied by the building instructions to install
> wxHaskell to another directory, because then the runtime loader will
> not find the libraries. You either have to install in some standard
> place (/usr, /usr/local, if that's in your ld.so.conf) or to modify
> /etc/ld.so.conf -- not a nice alternative. I know that this is a general
> problem, but maybe it could be mentioned on the installation page.
yeah, I will add a section about this. Actually, you can use the
"--shared-prefix" flag to configure to give a fixed path location such that
the runtime loader will find it. The only reason really to have a dynamic
library is to make the interaction between C and C++ possible -- for all
purposes it should be statically linked. That is why I give it such a specific
version name such that one can always use different installations of wxHaskell
next to each other.
>
> Now I'm glad that I got it running, and I want to than the developer(s)
> for the effort put into wxHaskell. Keep up the good work and thank you.
Thanks for you feedback,
-- Daan.
>
> Best wishes,
> Martin
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